论文标题
避免交替的模式
Pattern avoiding alternating involutions
论文作者
论文摘要
我们列举并表征了一些类似的交替和反向交替的参与，避免了三个或四个长度的单个模式。另一方面，如果长度三的模式是微不足道的，则长度四种情况更具挑战性，涉及组合兴趣的序列，例如Motzkin和fibonacci数字。
We enumerate and characterize some classes of alternating and reverse alternating involutions avoiding a single pattern of length three or four. If on one hand the case of patterns of length three is trivial, on the other hand, the length four case is more challenging and involves sequences of combinatorial interest, such as Motzkin and Fibonacci numbers.
